The ER diagram for an online news portal illustrates relationships between entities like author, article, comment, reaction, tag, user, and category. Authors create articles, which are categorized and tagged. Users can comment on articles and react to them, while reactions are linked to users and articles. Categories group articles under specific topics, while tags provide additional filtering options. The diagram helps developers understand how content is created, categorized, and interacted with by users, forming the backbone of an online news platform that promotes user engagement and structured content management.
